Clever/src/io/clever/MainActivity.java

package io.clever;

import android.os.Bundle;
import android.app.Activity;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.animation.*;
import android.view.animation.Animation.AnimationListener;
import android.view.inputmethod.EditorInfo;
import android.webkit.*;
import android.webkit.WebSettings.*;
import android.widget.*;
import android.widget.TextView.OnEditorActionListener;


public class MainActivity extends Activity {

	WebView webView;
	EditText urlField; 
	Button goButton;
	LinearLayout linearLayout, navbar;
	Animation slideUp, slideDown;
	
	public static final String HOME_PAGE = "file:///android_asset/www/index.html";
	public static final String PREFS_NAME = "CleverPrefs";
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        
    	super.onCreate(savedInstanceState);
        
        setContentView(R.layout.activity_main);
        
        linearLayout = (LinearLayout) findViewById(R.id.linearLayout);
        linearLayout.setBackgroundColor(Color.BLACK);

// Navbar setup

        navbar = (LinearLayout) findViewById(R.id.navbar);
        goButton = (Button)findViewById(R.id.go_button);
        urlField = (EditText)findViewById(R.id.url);
        
        goButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
            	doNav();
            }
        });

        urlField.setOnEditorActionListener(new OnEditorActionListener() {
            @Override
            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
                boolean handled = false;
                if (actionId == EditorInfo.IME_ACTION_GO) {
                	
                	doNav();
                    
                    handled = true;
                }
                return handled;
            }
        });
        
        SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
        String lastUrl = settings.getString("lastUrl", "");
        
   		urlField.setText(lastUrl);

        

// Navbar animation settings

		AnimationListener slideListener = new AnimationListener() {
	        @Override
	        public void onAnimationEnd(Animation animation) {
	        	if(animation.equals(slideUp)){
					navbar.setVisibility(View.GONE);
	        	}
	        }
	
			@Override
			public void onAnimationRepeat(Animation animation) {				
			}
	
			@Override
			public void onAnimationStart(Animation animation) {
				if(animation.equals(slideDown)){
					navbar.setVisibility(View.VISIBLE);
				}
			}
	    };

        slideUp = new TranslateAnimation(
			Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f,
			Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, -1.0f
    	  );
        slideUp.setDuration(500);
        slideUp.setAnimationListener(slideListener);
        
        slideDown = new TranslateAnimation(
			Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f,
			Animation.RELATIVE_TO_SELF, -1.0f, Animation.RELATIVE_TO_SELF, 0.0f
    	  );
        slideDown.setDuration(500);
        slideDown.setAnimationListener(slideListener);


// WebView setup
				
        webView = (WebView) findViewById(R.id.webView);
        
        WebSettings webSettings = webView.getSettings();
        
        webView.setWebChromeClient(new WebChromeClient()); 
        
        webView.setWebViewClient(new WebViewClient() {
			   
			   @Override
        	   public void onPageFinished(WebView view, String url) {
         		   
        		   Log.d("scale", view.getScale() + "");
        		   
	       	   	   Log.d("pageFinished",url);
	         	   
					if(url.equalsIgnoreCase(HOME_PAGE)){
	      		   		// navbar.setVisibility(View.VISIBLE);
	      		   			navbar.startAnimation(slideDown);
	      			}
      	    
        	   }
        	   
        	   @Override
        	   public void onScaleChanged (WebView view, float oldScale, float newScale){
        		   
        		   Log.d("scale changed", oldScale + " - " + newScale);
        		   
        		   if(newScale > 0.7){
        		   
        		   		Log.d("scale","reset");
        				//view.setInitialScale(70);
  			   
        		   }
        		   
        	   }

        
        });
        
        webView.setInitialScale(70);
       
        webView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
        webView.setVerticalScrollBarEnabled(false);
        webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
        webView.setOverScrollMode(WebView.OVER_SCROLL_NEVER);
        
        webSettings.setBuiltInZoomControls(false);
        webSettings.setSupportZoom(false);
        webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE);
        webSettings.setPluginState(WebSettings.PluginState.ON);
        webSettings.setJavaScriptEnabled(true);
        webSettings.setDomStorageEnabled(true);
        webSettings.setDatabaseEnabled(true); 
        webSettings.setDatabasePath("/data/data/" + webView.getContext().getPackageName() + "/databases/");
        webSettings.setSaveFormData(false);      
        webSettings.setLightTouchEnabled(false);
        webSettings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);
        webSettings.setRenderPriority( RenderPriority.HIGH);
        webSettings.setUserAgentString("Mozilla/5.0 (X11; Linux i686) AppleWebKit/534.24 (KHTML, like Gecko) Chrome/11.0.696.77 Large Screen Safari/534.24 GoogleTV");

        webView.loadUrl(HOME_PAGE);
        webView.requestFocus();
    }
    
    @Override
    protected void onStop(){
      
	  super.onStop();
	
	  SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
	  SharedPreferences.Editor editor = settings.edit();
	  editor.putString("lastUrl", urlField.getText().toString());
	
	  editor.commit();
    
    }

    @Override
    public void onBackPressed()
    {
        if(webView.canGoBack()){
            
        	webView.goBack();
            webView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
        
        } else {
        
        	super.onBackPressed();
        
        }
    }
    
    public void doNav(){
    	
    	String url = urlField.getText().toString();

    	if(URLUtil.isValidUrl(url) == false){
    		url = "http://" + url;
    	}
    	
    	
		urlField.setText(url);

		webView.requestFocus();

    	webView.loadUrl(url);

        navbar.startAnimation(slideUp);
		
    }
    
    
}